Identified with readability-redundant-typename.

Added Pattern for lowering `Math::ClampFOp` to `ROCDL::FMED3`.
Also added `chipet` option to `MathToRocdl` pass to check for arch
support ISA instructions

Solves [#15072](https://github.com/llvm/llvm-project/issues/157052)

Reapplies https://github.com/llvm/llvm-project/pull/160100

Un-reverts the merged https://github.com/llvm/llvm-project/pull/163259,
and fixes the error.

---------

Signed-off-by: Keshav Vinayak Jha <keshavvinayakjha@gmail.com>

Reverts llvm/llvm-project#163259. Reverting due to missing link libraries
causing failures in shared build bots.

Added Pattern for lowering `Math::ClampFOp` to `ROCDL::FMED3`.
Also added `chipset` option to `MathToRocdl` pass to check for arch
support ISA instructions

Solves [#15072](https://github.com/llvm/llvm-project/issues/157052)

Reapplies https://github.com/llvm/llvm-project/pull/160100

---------

Signed-off-by: Keshav Vinayak Jha <keshavvinayakjha@gmail.com>

These are identified by misc-include-cleaner.  I've filtered out those
that break builds.  Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.

This patch adds a pattern to convert the math.erfc operation to AMD GPU
library calls.

Depends on: #128897 for the flang test

* Have to relax static assert to allow reuse of existing template
patterns for conversion.

This commit marks the type converter in `populate...` functions as
`const`. This is useful for debugging.

Patterns already take a `const` type converter. However, some
`populate...` functions do not only add new patterns, but also add
additional type conversion rules. That makes it difficult to find the
place where a type conversion was added in the code base. With this
change, all `populate...` functions that only populate pattern now have
a `const` type converter. Programmers can then conclude from the
function signature that these functions do not register any new type
conversion rules.

Also some minor cleanups around the 1:N dialect conversion
infrastructure, which did not always pass the type converter as a
`const` object internally.

In this PR we add support for AMD f16 math library calls
(`__ocml_*_f16`)

CC: @krzysz00 @manupak